gzip -c file1 file2 > foo.gz If you want to recompress concatenated files to get better compression, d gzip -cd old.gz | gzip > new.gz If a compressed file consists of several members, the uncompressed size a the --list option applies to the last member only. If you need the unco members, you can use: gzip -cd file.gz | wc -c If you wish to create a single archive file with multiple members so that Manual page gzip(1) line 187 (press h for help or q to quit)
